“The Keeper” at the New Museum highlights the obsessive nature of collectors. It reminds Jenna Weissman Joselit of the Cohen collection at the National Museum of American Jewish History in Philadelphia.

What would happen if artists from different fields collaborated with each other to form communities? That was the premise of the 24-hour SymPop event. Jenna Weissman Joselit assesses her galvanizing event.

The 21st century is filled with technological marvels. But nearly a century ago, another magical gizmo was the flavor of the month. Jenna Weissman Joselit remembers the delights promised by the steropticon.

In 1949, Isaac Rosenfeld wrote in Commentary about kosher bacon and all hell broke loose in the Jewish community. Today, not so much. Jenna Weissman Joselit deconstructs what’s changed in those intervening decades.